natal plum

1. (Bot.) The drupaceous fruit of two South African shrubs of the genus Carissa (formerly Arduina) (Carissa bispinosa and Carissa grandiflora). It is also called amatungulu. [ 1913 Webster ]

2. the shrub bearing the natal plum{ 1 }; a very large closely branched South African shrub (Carissa grandiflora) of the dogbane family having forked bright green spines, white flowers, shiny leaves, and red berries. [ WordNet 1.5 +PJC ]